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To reduce the long term electricity cost of Smart Appliances (SAs) with deferrable operation time in smart grid, the authors propose a novel energy buffering framework to intelligently schedule the Distributed Energy Storage (DES) for the cost reduction of SAs in this paper. The proposed energy buffering framework determines the action policy (e.g., charging or discharging) and the power allocation policy of the DES to provide DES power to proper SAs at proper time with lower price than that of the utility grid, resulting in the reduction of the long term financial cost of SAs. Specifically, they firstly formulate the optimal decision problem in the energy buffering framework as a discounted cost Markov Decision Process (MDP) over infinite-horizon.
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